All three would be good for what you are looking for. Full disclosure, I have only ridden the TRice (I own last year's 161.5) but I can still give you my thoughts on the differences.

TRice Ė Pretty stiff so it will be more aggressive and more stable. True twin so it will be better for switch riding if you are centered, but may not have as good of powder float if not set back. Iím 6í4 210 and have no problem riding deep powder on my 161.5 so it still works well as a powder board and is a great all mountain slayer for an aggressive rider.

Billy Goat Ė very similar to the TRice from what I can tell. The major difference would be that it is a directional twin with a little set back.

SL Ė Neversummer has a great rep so their boards must be good. The SL isnít as stiff as the TRice so it wonít be as aggressive and stable, but will be a little more playful. I think the Legacy, or probably the Heritage are closer comparisons to the Rice or the Billy Goat. I compared the Rice and the Heritage side-by-side at the shot when I bought the Rice and they have a similar flex. Another main difference between the Rice and the Billy Goat is that they have MTX and Neversummers do not. Thatís not a bad thing, just a matter of preference. Some people like MTX and some donít. I think MTX is pretty good, but it can be a little grippy at times. Neversummer has vario grip which helps with edge hold but I have heard it isnít as grippy as MTX.

In conclusion, if you want something pretty stiff and aggressive, go with the Rice/Billy Goat or consider the NS Heritage. If you want something a little softer, go with the SL or look at the Lib TRS or the GNU Riders Choice.